<template>
  <div>
    <el-form ref="form" label-width="80px">
      <el-form-item label="SPU名称">
        {{ spu.spuName }}
      </el-form-item>
      <el-form-item label="SKU名称">
        <el-input placeholder="sku名称" v-model="skuInfo.skuName"></el-input>
      </el-form-item>
      <el-form-item label="价格(元)">
        <el-input placeholder="价格(元素)" type="number" v-model="skuInfo.price"></el-input>
      </el-form-item>
      <el-form-item label="重量(千克)">
        <el-input placeholder="重量(千克)" type="number" v-model="skuInfo.weight"></el-input>
      </el-form-item>
      <el-form-item label="规格描述">
        <el-input type="textarea" resize="none" rows="4" v-model="skuInfo.skuDesc"></el-input>
      </el-form-item>
      <el-form-item label="平台属性">
        <el-form :inline="true" ref="form" label-width="80px">
          <el-form-item :label="attr.attrName" v-for="(attr, index) in attrInfoList" :key="attr.id">
            <el-select placeholder="请选择" v-model="attr.attrIdAndValueId">
              <el-option :label="attrValue.valueName" :value="`${attr.id}:${attrValue.id}`"
                v-for="(attrValue, index) in attr.attrValueList" :key="attrValue.id"></el-option>
            </el-select>
          </el-form-item>
        </el-form>
      </el-form-item>
      <el-form-item label="销售属性">
        <el-form :inline="true" ref="form" label-width="80px">
          <el-form-item :label="saleAttr.saleAttrName" v-for="(saleAttr, index) in spuSaleAttrList" :key="saleAttr.id">
            <el-select placeholder="请选择" v-model="saleAttr.attrIdAndValueId">
              <el-option :label="saleAttrValue.saleAttrValueName" :value="`${saleAttr.id}:${saleAttrValue.id}`"
                v-for="(saleAttrValue, index) in saleAttr.spuSaleAttrValueList" :key="saleAttrValue.id"></el-option>
            </el-select>
          </el-form-item>
        </el-form>
      </el-form-item>
      <el-form-item label="图片列表">
        <el-table style="width: 100%" ref="multipleTable" border :data="spuImageList"
          @selection-change="handleSelctionChange">
          <el-table-column type="selection" prop="prop" width="80"></el-table-column>
          <el-table-column prop="prop" label="图片" width="width">
            <template slot-scope='{row,$index}'>
              <img :src="row.imgUrl" alt="图片" style="width: 100px;height: 100px;">
            </template>
          </el-table-column>
          <el-table-column prop="imgName" label="名称" width="width"></el-table-column>
          <el-table-column prop="prop" label="操作" width="width">
            <template slot-scope='{row,$index}'>
              <el-button type="primary" v-if="row.isDefault == 0" @click="changeDefalut(row)">设置默认</el-button>
              <el-button type="success" v-else>默认</el-button>

            </template>
          </el-table-column>
        </el-table>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" @click="save">保存</el-button>
        <el-button @click="cancel">取消</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>
<script>
export default {
  name: 'SkuForm',
  data() {
    return {
      //存储图片的信息
      spuImageList: [],
      //存储销售是属性
      spuSaleAttrList: [],
      //存储平台属性的数据
      attrInfoList: [],
      //收集sku数据的字段
      skuInfo: {
        //第一类收集的数据是父组件给予的数据
        category3Id: 0,
        spuId: 0,
        tmId: 0,
        //第二类数据是需要v-model双向绑定的数据
        price: 0,
        skuName: "",
        weight: 1,
        skuDesc: "",
        //第三类：需要我们自己书写代码的
        skuDefaultImg: "",//默认图片收集
        //图片列表收集
        skuImageList: [
          /* {
            id: 0,
            imgName: "string",
            imgUrl: "string",
            isDefault: "string",
            skuId: 0,
            spuImgId: 0
          } */
        ],
        //平台属性
        skuAttrValueList: [
          /* {
            attrId: 0,
            valueId: 0,
          } */
        ],
        //销售属性字段
        skuSaleAttrValueList: [
          /* {
            id: 0,
            saleAttrId: 0,
            saleAttrName: "string",
            saleAttrValueId: 0,
            saleAttrValueName: "string",
            skuId: 0,
            spuId: 0
          } */
        ],
      },
      spu: {},
      imageList: []
    }
  },
  methods: {
    //获取skuForm数组
    async getData(category1Id, category2Id, spu) {
      //收集父组件给予的数据
      this.skuInfo.category3Id = spu.category3Id
      this.skuInfo.spuId = spu.id
      this.skuInfo.tmId = spu.tmId
      this.spu = spu
      //获取图片的数据
      let result = await this.$API.spu.reqSpuImageList(spu.id);
      if (result.code == 200) {
        let list = result.data;
        list.forEach(item => {
          item.isDefault = 0;
        });
        this.spuImageList = list;
      }
      //获取销售属性的数据
      let result1 = await this.$API.spu.reqSpuSaleAttrList(spu.id);
      if (result1.code == 200) {
        this.spuSaleAttrList = result1.data;
      }
      //获取平台属性的数据
      let result2 = await this.$API.spu.reqAttrInfoList(category1Id, category2Id, spu.category3Id);
      if (result2.code == 200) {
        this.attrInfoList = result2.data;
      }

    },
    //复选框按钮的事件
    handleSelctionChange(params) {
      this.imageList = params
      //选择出未选中的
      let result = this.spuImageList.filter(item => {
        return this.imageList.every(item1 => {
          return item.id != item1.id
        })
      })
      //遍历设置其值为0
      result.forEach(item => {
        item.isDefault = 0
      })
      this.skuInfo.skuDefaultImg = ""
      //判断其值是否为1,是的话则赋值给
      this.imageList.forEach(item => {
        if (item.isDefault == 1) {
          this.skuInfo.skuDefaultImg = item.imgUrl
        }
      })
    },
    //改变默认按钮
    changeDefalut(row) {
      this.spuImageList.forEach(item => {
        item.isDefault = 0
      })
      this.$refs.multipleTable.toggleRowSelection(row, true);
      row.isDefault = 1
      this.skuInfo.skuDefaultImg = row.imgUrl
    },
    //点击取消按钮回退到spu
    cancel() {
      //自定义事件，让父组件切换场景0
      this.$emit('changeScenes', 0);
      //清除数据
      Object.assign(this._data, this.$options.data());
    },
    //点击保存按钮发送请求
    async save() {
      //整理参数
      const { attrInfoList, skuInfo, spuSaleAttrList, imageList } = this
      //整理平台属性的数据
      skuInfo.skuAttrValueList = attrInfoList.reduce((prev, item) => {
        if (item.attrIdAndValueId) {
          //解构出来
          const [attrId, valueId] = item.attrIdAndValueId.split(":");
          //添加到prev里面,prev是上一次的计算结果
          prev.push({ attrId, valueId });
        }
        return prev;
      }, []);
      //整理销售属性
      skuInfo.skuSaleAttrValueList = spuSaleAttrList.reduce((prev, item) => {
        if (item.attrIdAndValueId) {
          const [saleAttrId, saleAttrValueId] = item.attrIdAndValueId.split(':');
          prev.push({ saleAttrId, saleAttrValueId });
        }
        return prev;
      }, []);
      //整理图片的数据
      skuInfo.skuImageList = imageList.map(item => {
        return {
          imgName: item.imgName,
          imgUrl: item.imgUrl,
          isDefault: item.isDefault,
          spuImgId: item.id,
        }
      })
      //发请求
      let result = await this.$API.spu.reqAddSku(skuInfo);
      if (result.code == 200) {
        this.$message({ type: 'success', message: '添加SKU成功' })
        this.$emit('changeScenes', 0);
        //清除数据
        Object.assign(this._data, this.$options.data());
      }
    }
  },
}
</script>
<style scoped></style>
